Attn: Theists - What would it take to prove you wrong?

[Esquilax]

Where does the Bible say that the way to heaven is through belief in Jesus and where does it say that the unforgivable sin is not believing?

How come I've read the bible more than you?

"For many deceivers are entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver and an antichrist." -- 2 John 7

"If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, which is as thine own soul, entice thee secretly, saying, Let us go and serve other gods, which thou hast not known, thou, nor thy fathers; Namely, of the gods of the people which are round about you ... Thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him: But thou shalt surely kill him; thine hand shall be first upon him to put him to death, and afterwards the hand of all the people. And thou shalt stone him with stones, that he die." -- Dt.13:6-10

Seems pretty clear to me.